Boiler arch and wall and means for supporting same



L. S. SHAW. BOILER ARCH AND WALL AND MEANS FOR SUPPORTING SAME.

APPLICATION FILED MAY 3!, I919;

Patented July 6, 1920.

3 SHEETS-SHEET I.

. lo j 2 OO 0 OOO L. S. SHAW.

BOILER ARCH AND WALL AND MEANS FOR SUPPORTING SAME. APPLICATION I-"ILE DMAY 3!. I919.

I 34, 5,41 O.- Patented July 6; 1920.

3 SHEETS-SHEET 2.

L. S. SHAW.

BOILER ARCH AND WALL AND MEANS FOR SUPPORTING SAME.

APPLICATION FILED MAY 3I. 19I9. 1,345,41 0. P en d July 6, 1920.

3 SHEEIS-SHEEI'3.

Qvwentoz LUTHER S. SHAW, OF DETROIT, MICHIGAN.

BOILER ARCH AND WALL AND MEANS FOR SUPPORTING SAME.

Specification ol' Letters'l atent.

Patented July 6, 1929.

Application filed May 31, 1919. serial No. 300,897.

To all whom it may concern:

Be it known that l, LUTHER S. SHAW, citizen of the United States,residin at Detroit, county of Wayne, State of Michi- 'an, have inventeda certain new and useful improvement in Boiler Arches and Walls andMeans for Supporting Same, and declare the following to be a full,clear, and exact description of the same, such as will enable othersskilled in the art to which it pertains to make and use the same,reference being had to the accompanying drawings, which form a part ofthis specification.

My invention relates to boiler settings, but more particularly to meansfor supporting the roofs, arches and side walls,-the same beingconstructed of unburned fire brick while the latter is in a fictilecondition,and also for permanently suspending the same after the firebrick material has been duly burned.- I

, One object'of the invention is to provide means, in combination withpermanent -hangers, adapted to support channel irons,

metal lath and paper to serve as a form for the unbaked fire brickmaterial to hold it in place while baking.

Another feature of the invention consists in providing tubular bolts(throughwhich air may circulate to prevent warping an v burning of themetallic parts) suspenzle'l from Z-beams or other suitable structuralmembersthe bolts being provided with relatively large nuts or disks,secured there on for permanently supporting the arch-or wall when baked;-removable tubular bolts being screwed into said nuts to supportchannel irons on which is laid metal lath and paper for supporting thefirebrick material when in a formative condition,-said supportingelements being removed when the fire brick material has been duly baked.

Another feature of the invention consists in surrounding all metalsembedded in the fire brick material with ferrules, gaskets or washers offlexible material such as paper I felt. Another feature consists inproviding for lowering the arch on to the permanent hangers forsupportvafter baking) Another feature of the. invention consists inproviding a flexible connection between the bolts employed topermanently sustain the arch and those used for temporarily supmay berelieved of any porting the platform on which the fire brick material islaid before burning.

Another feature of the invention consists in suspending the permanenthangers by a nut adapted to tilt upon the flange of the supporting rail,that the fire brick material strain occasioned by a lilanger rigidly.secured to the supporting ral Another feature is the closure of theholes in the fire brick wall upon the removal of the temporarysupporting bolts.

Another feature of the invention is the driving out of said plugs by theinsertion of a suitable tool in the permanent tubular bolts above thetemporary bolts ;-that channels, lathing and paper may be againinstalled for the purpose of making repairs.

Another feature of the invention consists in providing ventilatingwashers and nuts for the passage of air whereby the parts may not warpor injure the fire brick wall while baking the latter.

Another feature of the invention consists in providing suitableexpansion joints in the fire brick material to further protect the wallsagainst injury during the baking process.

Another feature of the invention consists in the manner of supportingthe roof and side walls of inclined or V-type stokers.

Another feature of the invention consists in providing means whereby theside walls may be raised from the magazine for repairs, the same beingsubsequently lowered into their former position.

Another feature of the invention is to prevent the side walls tipping orsliding into the furnace.

Another object is to take the weight of the side walls ofi the iron workof the sto'ker magazine.

Another feature of the invention is the method of constructing andsupporting anv arch suitable for the rear end of a, return tubularboiler. Y

With the foregoing and other objects in view which will ap ear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes may be made inthe precise,

Fig. 6 is a cross-sectional view through I a V-type stokerfurnace-showing-the man ner of suspending walls.

Fig. 7 is a cross-sectional view also taken, on line 4-4 of Fig. 3,showing the temporary means employed for supporting the arch while thefire brick'material is in a fictile condition.

Fi 8 is an enlarged sectional detail view the arch and vertical sideshowing the tubular bolts for 'temporaril and for permanently suspendingthe arc the flexible connection between the bolts, and also the ventsthrough the bolts and supporting disks and nuts, to providefor thecirculation of air therethrough.

Fig. 9 is an enlarged sectional detail view, showing a tool inserted inthe tubular bolt for driving out the plug in the arch, that thesupporting means shown in the preceding view may be installed for makingrepairs in the arch.

Referring now to the letters of reference placed upon the drawings 1--A, denotes a boiler. B, the usual brick side walls or setting forsupporting the same. C, portedby the side walls of the boiler setting.

D, denotes a plurality of tubular bolts, spaced apart and suspended bynuts D, from the flange of the Z-beam C,--the head of the nut beingpreferably inverted in order that its rounded face may permit of a sliht swinging action of the bolt.

' E, indicates a relatively large disk loosely secured to the bolts byexpanding the lower end of the bolts, as indicated at a;-the disks beingpreferably arc-shaped on their upper face and provided with a pluralityof ventilating holes E, through the wall of the disks for the passage ofair.

F, are removable tubular bolts, screwed into the respective disks, toprovide a temporary extension of the bolts D, for supporting the channelirons G. H, indicates corrugated iron or expanded metal lath restingupon the channel irons, and I is a paper are 2- or other suitable beamssup- 1 lining mounted upon the metal lath. J, indicates a felt or papergasket or wrapping surrounding the bolts or disks.

K, denotes the arch formed of unburned fire brick laid upon thetemporary sustaining members, but embedding the ends of the permanentsupporting hangers or bolts. The form of the arch ma be either flat, orarc-shaped as indicated 1n dotted lines in Fig. 7 of the drawings. Theends of the temporary supporting bolts F, are provided with transverseholes F, and the ends of the bolts are fitted with an apertured plug Fto reduce the opening so as to cause a circulation of air through thechannel irons G, as well as throughout the bolts to thus insure againstwarping or buckling of the parts.

Prior to baking the material forming the arch, the nuts on the lowerends of the bolts F, may be adjusted to slightly raise the fire I brickmaterial so as to take the load from the permanent disks or washers E,until the arch has been properly baked.

The fire brick material forming the arch, having been properly shaped tomeet the requirements of the installation upon the temporary supportingmembers, it is then baked and upon completion of the baking process.

the temporary su porting members are removed, and the lioles throughwhich the bolts projected for suspending the latter structure are thenplugged up as indicated at L, in Fig. 5 of the drawings.

By suspending the bolts by nuts having a rounded face in contact withthe supporting beam, provision has been made for a slight rockingmovement of the bolt which may occur due to the expansion or contractionof the fire brick material during the baking process, the latter is thusrelieved of stresswhich in a rig'idly fixed bolt might cause the firebrick material to crack.

A flexible connection between the end of the bolts D, and the disks E,is obtained by expanding the end of the bolt so as to engage theoverlapping wall of the disk, the object being to provide a yieldingconnection between the upper and lower bolts so as to relieve the firebrick material of the stress that would occur from a rigid connectionand thereby overcoming any tendency" of the material to crack during thebaking process. Y

It will be noted upon reference to Fig. 6 of the draw 'ings that thebolts at the end of the supporting beam extend down into the verticalside walls to support the latter, taking the weight of the side wallsoff of the iron work of the stoker magazine, the bolts also serving toprevent the side walls tipping or slidin into the furnace. By anadjustment of t e nuts from which the bolts are suspended, the sidewalls may be raised or lowered for repairs.

To provide for the ex ansion and contraction of the material orming thearch and side walls-expansion joints M, are provided, formed byinserting suitable wedges in the unburned fire brick material.

When necessary to repair the arch, the filler plug L, is first drivenout by inserting a suitable tool N, in the bolts D. The extension boltsF, and "removable platform are then connected with the permanent boltsabove as before, the necessary repairs being made with unburned firebrick material, supported as in the initial construction of the arch, bythe removable platform until burned ;the platform and bolts are thenremoved and the holes plugged as before.

While the invention has been described more particularly as applied tosteam boiler furnaces, it is equally well adapted for use in other formsof furnaces.

Having thus described my invention, what I claim is 1. In a boilersetting, the combination of a plurality of beams suitably su ported, apluralit of bolts suspended rom said beams tted with relatively large.disks or nuts for supporting an arch or wall, a platform for temporarilysupporting an arch or wall of unburned fire brick material, a pluralityof bolts detachably connected with said first named bolts by said disksfor suspending the platform during the process of.

burning the fire brick material, and an arch or wall suspended from saidfirst named bolts, formed of unburned fire brick material upon saidplatform and baked while temporarily supported thereby.

2. In a boiler setting, the combination of a plurality of beams suitablysupported, a plurality of tubular bolts suspended from said beams,fitted with relatively large disks or nuts for supporting'an arch orwall, a

platform for temporarily supporting an,

arch or wall of unburned fire brick material, a plurality of extensiontubular bolts detachably connected with said first named bolts forsupporting said platform during the process of burning the fire brickmaterial, and an arch or wall permanently supported by said first namedbolts, formed-of:

unburned fire brick material upon said platform and baked whiletemporarily supported thereby.

3. In a boiler setting, the combination of a plurality of beams suitablysupported, a plurality of tubular bolts suspended from said beams, andfitted at their upper ends with nuts having a rounded face in contactwith", the flange of the beams, disks loosely se-,

porting an arch or wall, said disks having cured to the lower ends ofthe bolts for supholes for the passage of air therethrough, extensiontubular bolts temporarily con? nected with the first named bolts andfitted unburned fire brick material temporarily supported by saidplatform while being baked, and elastic wrappings surrounding said boltsand disks to maintain the fire brick material in spaced relation to saidmetallic members.

4. In a boiler setting, the combination of a plurality of- Z-beams,supported by the boiler setting, a plurality of tubular bolts suspendedfrom the flanges of said beams, disks provided with ventilating holesloosely secured to the lower ends of said bolts for supporting an arch,extension tubular bolts temporarily connected with the first namedbolts, having transverse openings for the passage of air, an aperturedplug fitted to the end of said tubular bolts to reduce the longitudinalopening therethrough, whereby the air will pass longitudinally andtransbeams, a plurality of relatively large disks or nuts having aflexible connection with the respective bolts for supporting an arch orwall, a platform for temporarily supporting an arch or wall of unburnedfire brick material, a plurality of extension tubular bolts detachablyconnected with said disks or nuts for supporting said platform duringthe process of burning the fire brick. material, an arch or wallpermanently supported by said first named bolts, formed of unburned firebrick material upon said platform and baked while-temporarily supportedthereby, .-;and suitable parting strips embedded in said arch' or wallwhereby expansion joints may be formed in'the latter.

a '6. In a boiler setting, the method and process of; suspending from anoverhead structure an arch or wall of unburned fire brick' material andafterward baking the same in position, consisting in first mount-%ing;su1table supporting beams on the walls ofa boiler' setting adaptedto support the arch or wall, suspending from said beams a 'plurality ofhangers adapted to permanently support the arch or wall, temporarilysuspending aplatform by detachable hangers connected with said firstnamed hangers,

shaping an arch or wall out of unburned fire In testimony whereof, Isign this specifibrick material around said permanent supcation in thepresence of two witnesses.

porting hangers and upon the temporary" LUTHER S SHAW supportingplatform, baking the unburned 5 fire brick material while supported bythe Witnesses:

platform, then removing the platform and S. E. THOMAS,

temporary supporting hangers. JOHN CONSIDINE, Jr.

